Diagrams called histograms show how often occurring values for continuous data are distributed. They display data that has been measured on the y-axis by frequency density, unlike bar charts, which do not. Similar to a bar chart, the data is represented by bars that emerge between measurements, essentially displaying all outcomes that fall within that range (officially referred to as a class interval) on the x-axis. Except when a certain class interval has no results, each bar hits the one after it and there are no gaps. Histograms are particularly effective in displaying data on weight, height, and duration.
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